Gibberellins have been shown to suppress floral development in mango, thus farmers have used growth retardants, especially paclobutrazol, to inhibit gibberellin biosynthesis, but in many countries such as Brazil, this is the unique registered molecule, which affects sustainability of the mango industry. The objective of this study was to evaluate the effect of metconazole on gibberellin biosynthesis inhibition and carbohydrate accumulation in ‘Palmer’ mango grown in semi-arid conditions. The experiment was accomplished from 2015 to 2017 in an experimental orchard located in Petrolina, Pernambuco, Brazil. The experimental design were randomized blocks with five treatments, five replications and three plants per replication. The treatments consisted of metconazole (0, 0.7, 1.0 or 1.3 g) and paclobutrazol (1.0 g) application per linear meter of plant canopy. According to the results, metconazole efficiently inhibits gibberellin biosynthesis in mango, but it affects AG₁ + AG₃ (Gibberellic Acid) and AG₄ differently. Therefore, metconazole can potentially be used on mango flowering management, but further studies are required to determine specific management practices.

中文翻译：

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甲康唑对芒果中赤霉素生物合成的抑制和开花管理

赤霉素已被证明能抑制芒果中的花发育，因此农民使用了生长抑制剂，特别是多效唑，来抑制赤霉素的生物合成，但是在巴西等许多国家，这是独特的注册分子，影响了芒果产业的可持续性。这项研究的目的是评估甲康唑对半干旱条件下生长的'Palmer'芒果中赤霉素生物合成抑制和碳水化合物积累的影响。该实验于2015年至2017年在巴西伯南布哥州Petrolina的一个实验果园中完成。实验设计是具有五个处理，五个重复和每个重复三个植物的随机区组。处理包括甲康唑（0、0.7、1.0或1.3 g）和多效唑（1。0 g）每线性米植物冠层的施用量。根据结果​​，甲康唑可有效抑制芒果中赤霉素的生物合成，但会影响AG₁  + AG ₃（赤霉素）和AG ₄不同。因此，甲康唑可以潜在地用于芒果开花管理，但是需要进一步的研究来确定具体的管理方法。